Don't get your hopes up if you've been to the SYD or MEL QF First lounge. The EK lounge is vast but I find it a bit soulless. Direct boarding from the lounge is impressive though. EK also performs the direct boarding trick from their lounge at LHR t3.
I'd be surprised if the landing was down to Partner Gold as PG is only one of several options now upon reaching 2,400SCs. I would though be disappointed if the landing was down to Gold given how hard it is to reach P1, particularly the QF-code only element (no Qantas flights to India, grumble...
I may be wrong but this thread isn't about switching the airline you fly with; it's about changing which FF scheme you credit points to. ie you can still fly with QF but be an AA EXP rather than a QF WP.
I wonder whether the introduction of P1 has changed other members' strategy. Prior to P1, I had considered switching to crediting points to AA once I'd hit LTG (as AA EXP is equivalent to QF WP) but now I'm sticking with crediting flights to QFF in order to retain P1 each year.
I wouldn't extrapolate this level of service and assume that MAS will provide it worldwide. Service in India is always "people heavy" due to the relatively low labour costs. I've been escorted all the way to the lounge in BOM by BA when flying J but it's always hit and miss.
Did you get in as a WP or a P1? P1s and CLs have been using the Emirates lounge for some months due to the work on the Qantas lounges. Your email suggests that WPs are also now able to use the Emirates Lounge (which is much better than the old QF Flounge).